Opportunity Mars Rover has driven 25 miles and surpassed expectations since it reached the planet in 2004

Opportunity has driven 25 miles since it arrived on Mars in 2004. It crossed the milestone after a 157-foot drive on Sunday.

“This is so remarkable considering Opportunity was intended to drive about one kilometer and was never designed for distance,” John Callas, Mars Exploration Rover Project Manager, said in a statement. “But what is really important is not how many miles the rover has racked up, but how much exploration and discovery we have accomplished over that distance.”

Opportunity is traveling along the rim of the Endeavor Crater, where NASA has gathered evidence of ancient water supply that was less acidic than those studied elsewhere on the planet.

As the rover approached this milestone, the team behind it named a 20-foot-wide Mars crater after the previous record holder, the Soviet Union’s Lunokhod 2, which drove 24.2 miles on the moon in 1973.